Home / 74,464.32-111,679.20-21,859.68

Finding the Fourth Proportional to 74,464.32, 111,679.20 and 21,859.68

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Solution

The fourth proportional to 74,464.32, 111,679.20 and 21,859.68 is: 32,784.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,464.32 : 111,679.20 = 21,859.68 : x
  2. Step 2: Convert to fraction form
    74,464.32/111,679.20 = 21,859.68/x
  3. Step 3: Cross multiply
    74,464.32x = 111,679.20 × 21,859.68
  4. Step 4: Simplify right side
    74,464.32x = 2,441,271,574.66
  5. Step 5: Solve for x
    x = 2,441,271,574.66/74,464.32
  6. Step 6: Final answer
    x = 32,784.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.